I worry that Oaken Summons has too many duds it can pull, so you may want to either cut it or go all-in and add a second copy while removing the ooze, Druid of the Swarm, and even Zola, adding in better stated 3-4 mana minions to take their place.
Since you have only two battlecry minion (acidic swamp ooze and The black Knight excluded as circumstancial ) I would toss out Zola the Gorgon for another ultimate infestation or better yet a Mire Keeper. Gola is usually used in tempo decks with low to mid cost minions who have battlecries (or good deathrattle effects) so you can make a copy of the minion the moment you play it (e.g. Bonemare into Zola the bonemare for 10 mana or Tortollan Forager into Zola into Tortollan Forager for 7 mana etc. etc.). Since your minions are big, you have to wait a turn till you "zola" the minion you played. In this turn your minion will most likely die.
Just keep playing Jade Druid. Its broken and gauranteed to win games due to having no weaknesses and never ending fucking armor and card draw due to Ultimate Brokenfestation. You also have Spreading Wins to stop aggro and midrange. Easy Peezy, brah.